Microscope



` H. N. OTT AND C. W. BARTON.

Mlcnoscove. APPLICATION'FILED SEPT. T9, 1916.

1 ,360,57 1 Patenwd Nov. 30, 1920.

2 SHEETS-SHEET I.

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H. N. OTT AND C. W. BARTN.

MICROSCOPE.

APPLICATION FILED SEPT. I9, 1916.

Patented Nov. 30, 1920.

2 SHEETS-SHEET 2.

J. j@ n M J UNITED STATES PATENT OFFICE.

HARVEY N. OTT AND CHARLES W. BARTON', OF BUFFALO, NEW YORK, ASSIGNOBS T0 SPENCER LENS C0.7 0F BUFFALO, NEW YORK.

MICBOSCOPE.

Specification of Letters Patent.

Patented Nov. 30, 1920.

Application led September 19, 1918. Serial N0. 120,944. i

To all whom it may concern citizen of the United States, and CHARLES W. BARTON, a subject of the King of Great Britain, both residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Microscopes, of which the following .is a specification.

This invention relates to improvements in binocular microscopes and more particularly to the arrangement of the eye-pieces and means for adjusting the'pupillary distance betweenI the eye-pieces in such instruments.

One object of the invention is to produce a binocular microscope of simple and desirable construction in which the pupillary distance between the eye-pieces can be adjusted to suit the eyes of different users, and in which the arrangement of the eyepieces is such that it is not necessary for the user to readjust his eyes to different angles in order to view objects through the microscopeand with the naked eyes when looking at near objects. Other objects of the invention are to provide efficient means of simple construction whereby the eye-pieces can be easily and conveniently adjusted to regulate, as required, the pupillary distance between. the same and also to provide the instrument with shutters or devices which can be readily operatedto shut oi either eye-piece so that the user can view the object with either eye singly whenever desired.

In vthe accompanying drawings:

Figure l is a front elevation of the body of a binocular microscope embodying the invention. f

Fig. 2 is a. longitudinal sectional elevation thereof on an enlarged scale, the objective tube being'omitted. y l Fig. 3 is a transverse sectional elevation thereof on line V3 3, Fig. 2. Y I n Fig. 4 is a sectional detail of the e e-piece adjusting device on line 4-4, Fig.

Fig. 5 is a plan view, detached, of a cover plate for the eye-piece slides.

Fig. 6 is a bottom plan view thereof. p

Fig. 7 is a plan view partly in section of the microscope body showing the eye-pieces close together.

Fig. 8 is a similar view showing the eyepieces adjusted outwardly awayirom each other. y

Fig. 9 is a sectional elevation of the eyepiece adjusting mechanism on line 9 9, Fig. '1, but (showing the eye-pieces in an intermediate position.

Fig. 10 is a fragmentary longitudinal sectional elevation of the instrument on line .l0-10, Fig. 8.

Fig. 1l is a plan view partly in section thereof, leaving off the cover plate and operating lever for the eye-piece slides.

In the drawings only the body portion of the microscope, including the body tube or casing with the eye-pieces and objective carried thereby are illustrated, the other parts of the instrument which are not necessary to an understanding of the invention being omitted.

A represents the hollow body or casing of the microscope, B and C the eye-piece tubes which are furnished with eye-pieces, and D the objective which depends from the casing and coperates with both eye-pieces. EX- cept as hereinafter described, these parts may be of any usual or suitable construction.

In the instrument shown, the body casing A. contains prisms shown at 1, 2 and 3, for dividing the light from the object and directing the same to the two eye-pieces. The eye-pieces converge downwardly toward the objective and the prisms land 3 are so shaped that the light rays reflected to them from the intermediate prism 2 willv be properly directed linto the eye-pieces, parallel with the axes thereof.` For example, the prisms 1 and 3 have upright faces parallel with the upright faces of the intermediate prism 2, top faces perpendicular to theaxes of the respective eye-pieces, and 'oblique faces which are inclined at the appropriate angles to said upright and top faces. The lower inclined face of the intermediate prism 2 has a thin silver coating which both reflects the light rays to the prism l and permits the passage of rays for reflection by the upper Ainclined surface of the prism 2 to the prism 3. By the employment of converging eye-pieces as shown, the user can look from a nearby object to an object through the' microscope without readjusting the rconverging eye-pieces than one having parallel eve-pieces.

The eye-pieces B .and C are ycarried by slides or plates 4 and 5 which are-mounted '0n 'the iup-peren@ oftheaeasing ,Afm me@ relatively Vto each other for yadjustiiiig{..vthel ipupillary distance between'the eye pieces.l These Vplates :are preferably Yarranged@f to',r slideV "horizontally toward and fromeaeh;VY

' other between parallel horizontal.;guides;V v651,?

Y fandi? on theupperend of thecasing'A.- As' shown, theV guides are-'undercutfonbeveledte' coperate vwith the correspondingly beveled edges of the @eye-piece?sldesand :eine ofthe guides' isi formed 'by a-nlintegralf-angegon the casing While the otherguidefZ-fis AVVfornled byja separate' bar sec 'ulf'ed by {screws-on the casing. The inner endsjof the slides-'14"and 5 are adapted t0 overlap (ir-passione beneathV theother in the movement 'of the slidesfand, Y for this purpose. arefpreferablyf'madeioi: a a

` screWfQ `in Ya recess or .fcafvityz in thejunder `reduce-flthickness. Thel eye-piecesicanfbe secured onf' the carrying 'slides' Vin anylsulit. able Waag for in-stalic'eleaelafshde *leerpro-V 'Y vided with xedupright tubular part f yor las nipplev 8l inV WhiehrtheQ eye-piece:"tube-V isQse# cured as by' a 'set' screw' 9 inr holefin the outer end f of theslidei' The prismsl and 3 are independently 'supportedfromthe rslides 'i4 and -5 so Athat 'these'pifismsY Willfmove with thev eye-pieces when the latterare adjusted.

As shownthe prism 1 is secured -as'by a clamping plate V11'` and screws .'12 on alegzor bracket 13 which islsecured byfa serexji;r ring 14e to theflowergend'ofthe eyepiecetube B Y and depends :therefrom 'into )the-"i casing;1 Af, f andthe prism :3 Ais similarlysu'spended vfrom'v the other e-yepiece Cby azleg-Qor-bracket15'. l VThe iprisms 1 and 3 are uthus'connected @to the eye-pieces so'asffto movetherewithxtoward and from the Y coperating VVV-V intermedi'ate pr'isnrrQl whenV the veye-pieces"are 'adjusted vtoward and from eachfother-andleach eyepiece with its Vcoperating;` prism is? mount- V ed on.l th'ef companion'y eye-piecesiide and'jis adapted* to be' removed' therewith as a; unit vfror'n the instrument.- f The described .manner of mounting the eye-,pieces'fandthe il prisms enables the n'seof the'con'vergingweyeepleces and permits vtl-Iea'djustment o-fjthe saineV for e' 4 pupillary Vdistance by. means of ai mnchjsimf ^-p'ler construction than heretoore used'.

For adjusting-fthe eye?pieeesftowardandV from each"otl'iera'nadjusting rin-gf 17 sur-. Y Y

lliorroekingthem;y v:The shutters are nor- 7 froundsf-the eye piece '-B; being-arranged to revolve on the securing?nipple 8 foriV this "ey'e-piece. ThisV adjusting .ring is-shoivnl as. v

` 'eye-piecesg 'by suitable means siichas'springs; 120

35: surrounding/1 .the roel-r shafts* Either Yshuttercan, befswvung byrockingfitsfshaft Y so1 asfto extend crosswise'below fthe V lowery Y Ader 'i8 thereon "asby acollar l9fsecured`by Vatv-set Vs'creve'fQO onfthe eye-'pieeeftuhe atthe 'flipper .endo-f vthe nipplef The "adjusting ringis providedfpreferably at the rearlside i i thereof with. mfulcmmjpin 21, 4,2 7 land.8,xwhi=3h enters a slotf22 in;aiinadpart` beingv retained (in the nipplejagain'st fajshou'l;

on the-topfof theprismv casing; Preferably7V this, slot is fornrredinl cover platen, which. is secured .on thecasing Aiovrthe. eye-piece "sideiofithe coverp'late-23- and is provided at Lits-@opposite .ends with slots into: one :of which.`A`

9 When the v sli-de; 4 Yis moved- Yby turnirigrthe a* j slotted Vat-'29 to .provide space forl the lmoveimen-t of the pin 28y on theaotherslide. r

ingy one of-l the eyepieces vis convenient]l to E-reach andl operate', 'muchmore "sof than -Would be an'operating'button or devicebetweenfthe eyepieces and it does noteccupy space-between the. eye-pieces, which should the casing between the eye-pieces, being stalftion'arily secured in-.place by screws 24hr other aste-nings. `The periphery of the ad.

justingring' is preferably knurledor rough# c ened so that it can be Vreadily turned. By turning theadjusting ringfr in'onedi'rection -v thewfulcru'inpin Von the sainebeing confined Y Yin the slot 22, causes the eye-pieee `B to'move foutwardly While' by rotating the ringin the Y opposite.y direction the slide with the eyepiece thereon" 'is' Inoved vinwardly; 1 For i from eachother, aleve-r25 fis provided connectingfzthe two eyefpieces; As shown, this entends.l a' pin 27 yon lthev slide 4f, while aV corjr'espondinglpin 28 on the other side 5 extends intothegslot-invthe other end ofthe-'lever'. 'l

9() adjusting ring 17, thepin thereon'enga'ging thelever 25 swings the lever and thereby causes an opposite movement. of@ the other slide. The' slide 4, as shown in Fig; k11is Y A.; The K describedusting y mechanisml is .very desrrablevwith the eyepieees arrangedas described. The' adiustingiring surround,-

Vbe left `free for-,the nose of'theluser-QThisf Spese is-quite narrowvwheni the;eyepieces SOY.,

ros 'i areadjusted'-*inwardlyA as lfar as necessary Y V to. suit the. eyes Vof, someusers. v

i 31frepresent twoy shutters the casing'r A andeachf` adaptedto be moved Y.to a position tofintercept vthe visionthrough 'one ofwthe V-eyepieees. These shuttersl pref,-

Verably consist 'of thin plates fixed on indernp'enidently; movable rockshafts 3Q, 33,- which are'suitably -journaled in-the casing and., arel provided at their; cute-rf. endsAV with, handles a c mally held, in Vthe positions shown in which they do jnoti obstruct; the 'View through the end of the Vcompa-nienk eye-piece! andiin ter cepty the view-'through the eye-pieceg thus 125 enablingrthe 'userat any timetogshut off' fthe vision fronivone or theother eye for'testing hisvision.V p Y Y We claim as our invention i Y hollow body two eye-pieces movably mounted on said hollow body for adjustment toward and from each other, an adjusting device operatively mounted on one of said eyepieces for adjusting the same, and connections between said eye-pieces for causing an equal but opposite adjustment of the other eye-piece when said .adjusting device is 0perated.

2. In a microscope, the combination of two eye-pieces movably mounted for adjustnient toward and from each other, and adjusting mechanism for causing equal but opposite adjustments of said eye-pieces including an operating ring which is arranged to rotate about the axis of one of said eyepieces for effecting the adjustment.

3. In a microscope, the combination of two eye-pieces movably mounted for adjustment toward and from each other, an adjusting ring arranged to rotate about one of said eye-pieces for adjusting the same, and operative connections between said eyepieces for causing an equal but opposite adjustment of theother eye-piece when said adjusting ring is turned.

l. In a microscope, the combination of two eye pieces, slides carrying said eyepieces and arranged to slide toward and from each othei1 for adjusting the pupillary distance between said eye-pieces, an adjusting ring arranged to rotate about one of said eye-pieces for adjusting the siide carrying the same, and operative connections between said slides for causing the simultaneous adjustment of the other slide when said adjusting ring is turned.

5. In a microscope, the combination of two eye-pieces, slides carrying said eyepieces, a support on which said slides are mounted to slide toward and from each other for adjusting the pupillary distance between said eye-pieces, an adjusting ring mounted to rotate on one of said slides and having a ulcrum on said support for adjusting said slide, and operative connections between said slides for causing the simultaneous adjustment of the other slide when said adjusting ring is turned.

6. In a microscope, the combination of a body, an objective, two eye-pieces the optical axes of which converge toward the objective and are both movabl mounted on the body to move toward and rom each other for adjusting the pupillary distance between the eye-pieces, the angle of convergence of said eye-pieces remainin constant in all adjustments of the eye-pieces, and means for directing the image from the objective to the two eye-pieces and maintaining the distance through which the light rays travel from the objective to both eye-pieces always equal.

7 In a microscope, the combination of a.

body, an objective, two eye-pieces the optical axes of which converge toward the objective and are both movably mounted on the body to move in opposite directions in a substantially straight line toward and from each other for adjusting the pupillary distance between the eye-pieces, whereby the angle of convergence of the two eye-pieces remains the same in all adjustments of the eye-pieces, and means for directing the image from the objective to the two eye-pieces and maintaining the distance through which the light rays travel from the objective to both eye-pieces always equal.

8. In a microscope, the combination of an objective, two eye-pieces which converge toward the objective and are both mounted to move in opposite directions in a substantially common straight line toward and from each other for adjusting the pupillary distance between the eye-pieces, and ray directing means comprising two prisms which move with the eye-pieces and have faces perpendicular to the axes of the eye-pieces.

9. In a microscope, the combination with two eye-pieces and an objective, of a movable shutter for each eye-piece, and means for moving either of said shuttersat will to a position to intercept the vision from its related eye-piece to the objective.

10. In a microscope, the combination with two eye-pieces, an objective and a connecting casing, of independently movable shutters in said casing, one for each eye-piece, and exterior operating devices for moving either of said shutters at will to a position to intercept the vision from its related eyepiece to the objective.

l1. In a microscope, the combination with the eye-pieces, objective and connecting casing, of shutters in said casing, independently operable rock shafts to which said shutters are secured, and handles on said shafts eX- terior to the casing for rocking said shafts to turn the shutters to positions in which they intercept the vision from the eye-pieces to the objective.

l2. In a microscope, the combination with the eye-pieces and the objective, of independently operable shutters, means which normally hold said shutters in inoperative positions, and exterior operating devices for moving the shutters to positions in which they intercept the vision from the eye-pieces to the objective.

Witness our hands this 15th day of September, 1916.

HARVEY N. OTT, CHARLES w. BARTON.

Witnesses:

EDWARD E. TRoUsT, LoUIs M. POTTER. 

